SY58021UMG Micrel Inc, SY58021UMG Datasheet

SY58021UMG

Manufacturer Part Number

SY58021UMG

Description

IC BUFFER/TRANSLATOR 1:4 16-MLF

Manufacturer

Micrel Inc

Series

Precision Edge®r

Type

Fanout Buffer (Distribution), Translatorr

Datasheet

1.SY58021UMG.pdf (13 pages)

Specifications of SY58021UMG

Number Of Circuits

Ratio - Input:output

1:4

Differential - Input:output

Yes/Yes

Input

CML, LVDS, LVPECL

Output

LVPECL

Frequency - Max

4GHz

Voltage - Supply

2.375 V ~ 3.6 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

16-MLF®, QFN

Frequency-max

4GHz

Number Of Outputs

Operating Supply Voltage (max)

3.6V

Operating Temp Range

-40C to 85C

Propagation Delay Time

0.3ns

Operating Supply Voltage (min)

2.375V

Mounting

Surface Mount

Pin Count

Operating Supply Voltage (typ)

2.5/3.3V

Package Type

MLF EP

Input Frequency

4GHz

Operating Temperature Classification

Industrial

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

576-1535-5
SY58021UMG

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Company

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Quantity

Price

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Part Number:

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Manufacturer:

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General Description

The SY58021U is a 2.5V/3.3V precision, high-speed, fully

differential 1:4 LVPECL fanout buffer. Optimized to provide

four identical output copies with less than 15ps output

skew and only 70 fs

process clock signals as fast as 4GHz.

The differential input includes Micrel’s unique, 3-pin input

termination architecture interfaces to differential LVPECL,

CML, and LVDS signals (AC- or DC-coupled) as small as

100mV without any level-shifting or termination resistor

networks in the signal path. For AC-coupled input interface

applications, an on-board output reference voltage (V

is provided to bias the VT pin. The outputs are 100k

LVPECL compatible, with extremely fast rise/fall times

guaranteed to be less than 100ps.

The SY58021U operates from a 2.5V ±5% supply or 3.3V

±10% supply and is guaranteed over the full industrial

temperature range (–40°C to +85°C). For applications that

require faster rise/fall times, or greater bandwidth, consider

the SY58022U 1:4 fanout buffer with 400mV LVPECL

output swing, or the SY58020U 1:4 CML fanout buffer. The

SY58021U is part of Micrel’s high-speed, Precision Edge

product line.

Data sheets and support documentation can be found on

Micrel’s web site at www.micrel.com.

Precision Edge is a registered trademark of Micrel, Inc.

August 2010

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (

RMS

phase jitter, the SY58021U can

REF AC

)

Features

• Precision 1:4 LVPECL fanout buffer

• Guaranteed AC performance-over-temperature/voltage:

• Low jitter performance:

• Accepts an input signal as low as 100mV

• Unique input termination and VT pin accepts DC-

• 100k LVPECL-compatible 800mV swing output

• Power supply 2.5V ±5% and 3.3V ±10%

• −40°C to +85°C temperature range

• Available in 16-pin (3mm × 3mm) QFN package

Applications

• All SONET and GigE clock distribution

• Fibre Channel clock and data distribution

• Backplane distribution

• High-end, low-skew, multiprocessor, synchronous clock

408

Buffer/Translator with Internal Termination

− >4GHz f

− <100ps t

− <300ps t

− <15ps maximum skew

− 70fs

coupled and AC-coupled differential inputs: LVPECL,

LVDS, and CML

distribution

) 944-0800 • fax + 1 (408) 474-1000 •

RMS

4GHz, 1:4 LVPECL Fanout

MAX

phase jitter (typical)

times

Precision Edge

(clock)

SY58021U

hbwhelp@micrel.com

http://www.micrel.com

or (408) 955-1690

M9999-080510-A

Precision Edge

Related parts for SY58021UMG

SY58021UMG Summary of contents

Page 1

... Data sheets and support documentation can be found on Micrel’s web site at www.micrel.com. Precision Edge is a registered trademark of Micrel, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 ( August 2010 SY58021U 4GHz, 1:4 LVPECL Fanout ...

Page 2

... Ordering Information Part Number Package Type SY58021UMI QFN-16 (2) SY58021UMITR QFN-16 (3) SY58021UMG QFN-16 (2, 3) SY58021UMGTR QFN-16 Notes: 1. Contact factory for die availability. Dice are guaranteed Tape and Reel. 3. Pb-Free package recommended for new designs. Pin Configuration August 2010 Operating Range Package Marking ...

Page 3

Micrel, Inc. Pin Description Pin Number Pin Name Pin Function Differential Input: This input pair receives the signal to be buffered. Each pin of this pair internally terminates with 50Ω to the VT pin. Note that this input will default ...

Page 4

Micrel, Inc. Absolute Maximum Ratings ) ......................... −0.5V to +4.0V Power Supply Voltage ( ............................................ −0. Input Voltage (V IN LVPECL Output Current (I ) OUT Continuous ............................................................ 50mA Surge .................................................................. 100mA Source or Sink Current ...

Page 5

Micrel, Inc. LVPECL Output DC Electrical Characteristics = 3.3V ±10% or 2.5 ±5 50Ω Symbol Parameter V Output HIGH Voltage OH V Output LOW Voltage OL V Output Voltage Differential Swing OUT V ...

Page 6

Micrel, Inc. Phase Noise Graph August 2010 6 hbwhelp@micrel.com SY58021U M9999-080510-A or (408) 955-1690 ...

Page 7

Micrel, Inc. Timing Diagram Single-Ended and Differential Swings Figure 1a. Single-Ended Voltage Swing August 2010 Figure 1b. Differential Voltage Swing 7 hbwhelp@micrel.com SY58021U M9999-080510-A or (408) 955-1690 ...

Page 8

Micrel, Inc. Typical Characteristics V = 2.5V, GND = 100mV August 2010 = 25°C, unless otherwise stated SY58021U M9999-080510-A hbwhelp@micrel.com or (408) 955-1690 ...

Page 9

Micrel, Inc. Functional Characteristics V = 2.5V, GND = 100mV Input Stage August 2010 = 25°C, unless otherwise stated. A Figure 2. Simplified Differential Input Buffer 9 SY58021U M9999-080510-A hbwhelp@micrel.com or (408) 955-1690 ...

Page 10

Micrel, Inc. Input Interface Applications Figure 3a. LVPECL Input Interface Figure 3d. DC-Coupled CML Input Interface August 2010 Figure 3b. AC-Coupled LVPECL Input Interface Figure 3e. AC-Coupled CML Input Interface 10 SY58021U Figure 3c. LVDS Input Interface M9999-080510-A hbwhelp@micrel.com or ...

Page 11

Micrel, Inc. LVPECL Output LVPECL outputs have very-low output impedance (open emitter), and small signal swing which results in low EMI. LVPECL is ideal for driving 50Ω- and 100Ω-controlled impedance transmission lines. There are several techniques in terminating the LVPECL ...

Page 12

Micrel, Inc. Related Micrel Products and Support Documentation Part Number Function 6GHz, 1:4 CML Fanout Buffer/Translator SY58020U with Internal I/O Terminations 4GHz, 1:4 LVPECL Fanout Buffer/Translator SY58021U with Internal Termination 5.5GHz, 1:4 Fanout Buffer/Translator with SY58022U 400mV LVPECL Outputs and ...

Page 13

Micrel, Inc. Package Information MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, ...

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